Large crankshaft part surface laser cladding repairing device

Abstract

The invention relates to the technical field of crankshaft machining equipment, and particularly discloses a large crankshaft part surface laser cladding repairing device which comprises a base, a monitoring assembly, a support assembly, a mechanical arm support, a crawler belt, a mechanical arm, a supporting block and a small head end support. The small head end support is fixedly connected with the base, each set of supporting blocks are detachably connected with the base, a sliding way is arranged on one side of the base, the mechanical arm support is slidably connected with the base, the mechanical arm is fixedly connected with the mechanical arm support and located at the upper end of the mechanical arm support, and the crawler belt is arranged on one side of the base and matched with the mechanical arm support. The crankshaft circular bead and multiple positions on the inner side of the balance block can be repaired through 360-degree rotation, the function of conducting repairing and monitoring at the same time is achieved, manpower and material resources are saved, and meanwhile damage to a crankshaft in the moving process is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of crankshaft processing equipment, and in particular to a laser cladding repair device for the surface of a large crankshaft part. Background Art

[0002] At present, large crankshafts play an important role in industries such as large ships, train locomotives and oil field mining. Their surface quality has an important impact on the performance and life of the equipment, and the precision requirements of large crankshafts are relatively high, so the manufacturing process is relatively complicated, time-consuming and costly, and the cost is very high. However, shaft parts that have been in service for a long time are prone to wear, burns, abrasions and fatigue fractures, which affect the working accuracy and even fail. If not handled in time, it will pose a serious threat to the safety of machines and personnel; shaft parts are directly scrapped after failure, which will lead to increased costs and waste of resources, which is contrary to the green circular economy principle of "reduction, reuse, and resource utilization"; using appropriate technology to remanufacture such failed and scrapped shaft parts to achieve replacement products or better performance than replacement products will have important economic and social significance.

[0003] Compared with traditional surface repair processes, laser cladding has the advantages of concentrated heat, small heat-affected zone, low dilution rate, fast melting and cooling, and less deformation. At the same time, the ultra-high temperature gradient is conducive to the directional solidification growth of the material, so that the coating has good metallurgical bonding and wear resistance, corrosion resistance, high hardness and other properties. In addition, laser cladding is easier to automate, and the cladding process parameters can be precisely controlled and transplanted to industrial production on a large scale.

[0004] However, in the prior art, for the repair of large crankshafts, it is not possible to simultaneously monitor and repair them, and the outer diameter and inner diameter cannot be repaired at the same time. Repair cannot be performed at inclined fillet positions and inside balance blocks, which increases labor costs. Summary of the invention

[0005] The purpose of the present invention is to provide a laser cladding repair device for the surface of a large crankshaft part, aiming to solve the technical problems in the prior art of repairing a large crankshaft, that is, it is impossible to realize simultaneous monitoring and repair, and that the outer diameter repair and the inner diameter repair cannot be performed simultaneously, and that repair cannot be performed at inclined fillet positions and inside balance blocks, thereby increasing labor costs.

[0006] To achieve the above-mentioned purpose, the present invention adopts a large crankshaft part surface laser cladding repair device, including a base, a monitoring component, a bracket assembly, a mechanical arm bracket, a track, a mechanical arm, a support block and a small head end bracket. The monitoring component is fixedly connected to the base and is located at the upper end of the base. The bracket assembly is fixedly connected to the base and is located at the upper end of the base. The small head end bracket is fixedly connected to the base and is located at the upper end of the base. The number of the support blocks is multiple groups, and each group of support blocks is detachably connected to the base and is respectively located at the upper end of the base. One side of the base has a slide, the mechanical arm bracket is slidably connected to the base and is located on one side of the base, the mechanical arm is fixedly connected to the mechanical arm bracket and is located at the upper end of the mechanical arm bracket, and the track is arranged on one side of the base, and the track and the mechanical arm bracket are adapted to each other.

[0007] Wherein, the robotic arm includes a coarse adjustment knob, a nozzle assembly, axis two, axis three, axis four, axis five, axis six, axis seven and a fine adjustment knob, the axis six is ​​arranged at one end of the axis seven, the axis five is arranged at one end of the axis six, the axis four is arranged at one end of the axis five, the axis three is arranged at one end of the axis four, the axis two is arranged at one end of the axis three, the nozzle assembly is arranged at one end of the axis two, the coarse adjustment knob and the fine adjustment knob are respectively arranged on one side of the axis three, and are respectively adapted to the axis three.

[0008] Wherein, the nozzle assembly includes a nozzle body and a support rod, and the support rod supports the nozzle body to rotate 360 ​​degrees.

[0009] Wherein, the monitoring component includes a monitoring sliding platform, a monitor bracket, a hydraulic rod, a monitoring probe and a laser emitter. The monitoring sliding platform is fixedly connected to the base and is located at the upper end of the base. The monitor bracket is slidably connected to the monitoring sliding platform and is located at the upper end of the monitoring sliding platform. The number of the hydraulic rods is multiple groups, and each group of the hydraulic rods is respectively fixedly connected to the monitor bracket and is respectively located at the upper end of the monitor bracket. The monitoring probe is fixedly connected to the output ends of the multiple groups of hydraulic rods and is located at the upper ends of the multiple groups of hydraulic rods. The laser emitter is embedded in the monitoring probe and is adapted to the monitoring probe.

[0010] Among them, the bracket assembly includes a bracket sliding platform and a flange end bracket, the bracket sliding platform is fixedly connected to the base and is located at the upper end of the base, and the flange end bracket is slidably connected to the bracket sliding platform and is located at the upper end of the bracket sliding platform.

[0011] The beneficial effects of the laser cladding repair device for the surface of a large crankshaft part of the present invention are as follows: the laser cladding repair device is equipped with a detachable nozzle, which can rotate 360° to repair the crankshaft fillet and multiple positions on the inner side of the balance block. The bracket assembly can move left and right to facilitate the subsequent repair of the inner hole of the flange end. A movable and detachable support block is added to the middle main journal to reduce damage to both ends of the crankshaft due to excessive deadweight of the large crankshaft. Infrared laser can be used to measure the diameter and thickness of the outer diameter and inner diameter of the large crankshaft, and the inner hole and outer wall of the crankshaft can be repaired. This device also realizes the function of simultaneous repair and monitoring. Setting the initial point can accurately find the position that does not meet the requirements for secondary repair, saving manpower and material resources, and reducing the damage incurred during the movement of the crankshaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a schematic structural diagram of the first embodiment of the present invention.

[0014] Figure 2 It is a left side view of the first embodiment of the present invention.

[0015] Figure 3 It is a right side view of the first embodiment of the present invention.

[0016] Figure 4 It is a schematic diagram of the structure of the monitoring component of the present invention.

[0017] Figure 5 It is a schematic structural diagram of the second embodiment of the present invention.

[0018] Figure 6 It is a left side view of the second embodiment of the present invention.

[0019] 1-base, 2-monitoring assembly, 3-bracket assembly, 4-mechanical arm bracket, 5-track, 6-mechanical arm, 7-support block, 8-small head end bracket, 9-coarse adjustment knob, 10-nozzle body, 11-support rod, 12-axis two, 13-axis three, 14-axis four, 15-axis five, 16-axis six, 17-axis seven, 18-fine adjustment knob, 19-monitoring sliding platform, 20-monitor bracket, 21-hydraulic rod, 22-monitoring probe, 23-laser transmitter, 24-bracket sliding platform, 25-flange end bracket. DETAILED DESCRIPTION

[0020] For the first embodiment, please refer to Figures 1 to 4 The present invention provides a surface laser cladding repair device for a large crankshaft part, comprising a base 1, a monitoring component 2, a support component 3, a mechanical arm support 4, a crawler 5, a mechanical arm 6, a support block 7 and a small head end support 8, wherein the monitoring component 2 is fixedly connected to the base 1 and is located at the upper end of the base 1, the support component 3 is fixedly connected to the base 1 and is located at the upper end of the base 1, the small head end support 8 is fixedly connected to the base 1 and is located at the upper end of the base 1, the number of the support blocks 7 is multiple groups, each group of the support blocks 7 is detachably connected to the base 1 and is respectively located at the upper end of the base 1, one side of the base 1 has a slideway, the mechanical arm support 4 is slidably connected to the base 1 and is located at one side of the base 1, the mechanical arm 6 is fixedly connected to the mechanical arm support 4 and is located at the upper end of the mechanical arm support 4, the crawler 5 is arranged on one side of the base 1, and the crawler 5 and the mechanical arm support 4 are adapted to each other.

[0021] Further, the robotic arm 6 includes a coarse adjustment knob 9, a nozzle assembly, an axis two 12, an axis three 13, an axis four 14, an axis five 15, an axis six 16, an axis seven 17 and a fine adjustment knob 18, the axis six 16 is arranged at one end of the axis seven 17, the axis five 15 is arranged at one end of the axis six 16, the axis four 14 is arranged at one end of the axis five 15, the axis three 13 is arranged at one end of the axis four 14, the axis two 12 is arranged at one end of the axis three 13, the nozzle assembly is arranged at one end of the axis two 12, the coarse adjustment knob 9 and the fine adjustment knob 18 are respectively arranged on one side of the axis three 13, and are respectively adapted to the axis three 13.

[0022] Furthermore, the nozzle assembly includes a nozzle body 10 and a support rod 11, and the support rod 11 supports the nozzle body 10 to rotate 360 ​​degrees.

[0023] Furthermore, the monitoring component 2 includes a monitoring sliding platform 19, a monitoring bracket 20, a hydraulic rod 21, a monitoring probe 22 and a laser emitter 23. The monitoring sliding platform 19 is fixedly connected to the base 1 and is located at the upper end of the base 1. The monitoring bracket 20 is slidably connected to the monitoring sliding platform 19 and is located at the upper end of the monitoring sliding platform 19. The number of the hydraulic rods 21 is multiple groups, and each group of the hydraulic rods 21 is respectively fixedly connected to the monitoring bracket 20 and is respectively located at the upper end of the monitoring bracket 20. The monitoring probe 22 is fixedly connected to the output ends of the multiple groups of the hydraulic rods 21 and is located at the upper ends of the multiple groups of the hydraulic rods 21. The laser emitter 23 is embedded in the monitoring probe 22 and is adapted to the monitoring probe 22.

[0024] Furthermore, the bracket assembly 3 includes a bracket sliding platform 24 and a flange end bracket 25, the bracket sliding platform 24 is fixedly connected to the base 1 and is located at the upper end of the base 1, and the flange end bracket 25 is slidably connected to the bracket sliding platform 24 and is located at the upper end of the bracket sliding platform 24.

[0025] In this embodiment, the monitoring component 2 and the bracket component 3 are supported by the base 1, the crawler 5 drives the mechanical arm bracket 4, the mechanical arm bracket 4 supports and fixes the mechanical arm 6, and the support block 7 supports the large crankshaft, and the small head end bracket 8 and the bracket component 3 support and position the two ends of the large crankshaft, the axis 7 17 can rotate around the Z axis, the axis 6 16, the axis 5 15 and the axis 4 14 can rotate around the Y axis, the axis 3 13 drives the axis 2 12 and the nozzle to rotate 360°, and the length of the nozzle body 10 is adjusted by the coarse adjustment knob 9 and the fine adjustment knob 18. In the monitoring component 2, the monitor bracket 20 moves horizontally on the monitoring sliding platform 19. At the same time, the hydraulic rod 21 adjusts the height of the monitoring probe 22, and the data of the large crankshaft is measured by the laser transmitter 23. This laser cladding repair device is equipped with a detachable nozzle, which can rotate 360° to repair the crankshaft fillet and multiple positions on the inner side of the balance block. The bracket assembly 3 can move left and right to facilitate the subsequent repair of the inner hole of the flange end. A movable and detachable support block 7 is added to the middle main journal to reduce the damage to the two ends of the crankshaft due to excessive deadweight. Infrared laser can be used to measure the diameter and thickness of the outer diameter and inner diameter of the large crankshaft, and the inner hole and outer wall of the crankshaft can be repaired. This device also realizes the function of simultaneous repair and monitoring. Setting the initial point can accurately find the position that does not meet the requirements for secondary repair, saving manpower and material resources, and reducing the damage in the process of moving the crankshaft.

[0026] For the second embodiment, please refer to Figure 5 and Figure 6 On the basis of the first embodiment, the nozzle body 10, the support rod 11 and the shaft 12 are disassembled and replaced. The replaced nozzle body 10 and the shaft 12 can repair the outer diameter. There is a difference in the amount of powder sprayed between the inner diameter repair and the outer diameter repair. Therefore, replacing the nozzle body 10 can better spray repair the outer diameter and improve the repair efficiency.

[0027] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A laser cladding repair device for the surface of a large crankshaft part, characterized in that: It includes a base, a monitoring component, a bracket component, a mechanical arm bracket, a track, a mechanical arm, a support block and a small head end bracket. The monitoring component is fixedly connected to the base and is located at the upper end of the base. The bracket component is fixedly connected to the base and is located at the upper end of the base. The small head end bracket is fixedly connected to the base and is located at the upper end of the base. There are multiple groups of support blocks, and each group of support blocks is detachably connected to the base and is located at the upper end of the base. One side of the base has a slide, the mechanical arm bracket is slidably connected to the base and is located at one side of the base, the mechanical arm is fixedly connected to the mechanical arm bracket and is located at the upper end of the mechanical arm bracket, and the track is arranged on one side of the base, and the track and the mechanical arm bracket are adapted to each other.

2. A large crankshaft component surface laser cladding repair device as claimed in claim 1, characterized in that: The robotic arm includes a coarse adjustment knob, a nozzle assembly, an axis two, an axis three, an axis four, an axis five, an axis six, an axis seven and a fine adjustment knob, the axis six is ​​arranged at one end of the axis seven, the axis five is arranged at one end of the axis six, the axis four is arranged at one end of the axis five, the axis three is arranged at one end of the axis four, the axis two is arranged at one end of the axis three, the nozzle assembly is arranged at one end of the axis two, the coarse adjustment knob and the fine adjustment knob are respectively arranged on one side of the axis three, and are respectively adapted to the axis three.

3. A large crankshaft component surface laser cladding repair device as claimed in claim 2, characterized in that: The nozzle assembly comprises a nozzle body and a support rod, and the support rod supports the nozzle body to rotate 360 ​​degrees.

4. A large crankshaft component surface laser cladding repair device as claimed in claim 1, characterized in that: The monitoring assembly includes a monitoring sliding platform, a monitor bracket, a hydraulic rod, a monitoring probe and a laser emitter. The monitoring sliding platform is fixedly connected to the base and is located at the upper end of the base. The monitor bracket is slidably connected to the monitoring sliding platform and is located at the upper end of the monitoring sliding platform. There are multiple groups of hydraulic rods, and each group of hydraulic rods is fixedly connected to the monitor bracket and is located at the upper end of the monitor bracket. The monitoring probe is fixedly connected to the output ends of the multiple groups of hydraulic rods and is located at the upper ends of the multiple groups of hydraulic rods. The laser emitter is embedded in the monitoring probe and is compatible with the monitoring probe.

5. The laser cladding repair device for the surface of a large crankshaft part according to claim 1, characterized in that: The bracket assembly includes a bracket sliding platform and a flange end bracket, the bracket sliding platform is fixedly connected to the base and is located at the upper end of the base, and the flange end bracket is slidably connected to the bracket sliding platform and is located at the upper end of the bracket sliding platform.

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